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  1. Auxin - Wikipedia

    Auxins (plural of auxin / ˈɔːksɪn /) are a class of plant hormones (or plant-growth regulators) with some morphogen -like characteristics. Auxins play a cardinal role in coordination of many growth and …

  2. Auxin | Definition, Functions, & Uses | Britannica

    Auxin, any of a group of plant hormones that regulate growth, particularly by stimulating cell elongation in stems. Auxins also play a role in cell division and differentiation, in fruit development, in the …

  3. Auxin (Plant): Definition, Function and Structure - Biology Dictionary

    May 13, 2018 · An auxin is a plant hormone derived from the amino acid tryptophan. An auxin may be one of many molecules, but all auxin molecules are involved in some sort of cellular regulation.

  4. Mechanisms of auxin action in plant growth and development

    May 19, 2025 · The phytohormone auxin coordinates plant growth by forming local maxima and gradients through cell-to-cell transport and metabolic control.

  5. What Are the Functions of Auxin in Plants? - Biology Insights

    Jun 27, 2025 · Auxin is a class of plant hormones that directs many aspects of plant growth and development. This hormone group influences how a plant develops its structure and responds to its …

  6. Auxin – Definition, Structure, and Function - Science Facts

    Feb 17, 2023 · An auxin is a group of growth hormones found in all plant tissues in varying concentrations. The name of this class of hormone comes from the Greek word ‘ auxein ‘, which …

  7. Auxin - GeeksforGeeks

    Jul 23, 2025 · Auxin is a plant hormone. Auxin hormone function is to control growth and developmental processes in plants, including cell expansion, root initiation, and bud and flower growth. Auxin, …

  8. 11.1: Auxin - Biology LibreTexts

    The most important auxin produced by plants is indole-3-acetic acid (IAA). It undergoes both polar (unidirectional) and nonpolar transport. Key functions include mediating tropisms, growth and …

  9. What is Auxin? – Auxin Definition - BYJU'S

    Auxins are a group of naturally occurring and artificially synthesised plant hormones. They play an important role in the regulation of plant growth. Auxins were initially isolated from human urine. Auxin …

  10. Auxin - an overview | ScienceDirect Topics

    Auxin is a small organic acid yet influences cell expansion and division, cell elongation and differentiation, and a variety of physiological responses, thus significantly affecting the final shape …